AMR to OPUS Converter
Convert AMR files to OPUS in seconds, right in your browser. Drop in one file or a whole folder, pick your quality settings and download - nothing is uploaded to a server.
Drop AMR files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more · Processed on your device - nothing is uploaded
How to convert AMR to OPUS
- Click "Choose files" or drag your AMR files onto the page.
- Make sure "OPUS" is selected as the output format (128 kbps is a good default).
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your OPUS files.
Why convert AMR to OPUS?
OPUS may be better supported by your device or app. To keep quality, choose a bitrate equal to or higher than the original AMR.
OPUS is best for voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes. All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC.
Will I lose quality?
Converting between two lossy formats re-encodes the audio, which can add a small amount of loss. Use a bitrate at least as high as the original (192 kbps or more) to keep it transparent.
AMR vs OPUS
| AMR | OPUS | |
|---|---|---|
| Full name | Adaptive Multi-Rate | Opus Interactive Audio Codec |
| Type | lossy | lossy |
| Best for | voice recordings from older phones | voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes |
| Typical size | ~0.1 MB per minute | ~0.9 MB at 128 kbps per minute |
| Compatibility | Phones and some players; poor support on computers - convert it to MP3 to play anywhere. | All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC. |
| Developed by | - | IETF / Xiph.Org (2012) |
AMR to OPUS: questions
How do I convert AMR to OPUS?
Open this page, add your AMR file, make sure OPUS is selected as the output format and click Convert. Your OPUS file is ready to download in seconds.
Will converting AMR to OPUS lose quality?
Converting between two lossy formats re-encodes the audio, which can add a small amount of loss. Use a bitrate at least as high as the original (192 kbps or more) to keep it transparent.
Is this AMR to OPUS converter free and safe?
Yes. It's free with no watermark or sign-up. Files are processed locally in your browser, so your audio is never uploaded or stored on our servers.
Can I convert many AMR files to OPUS at once?
Yes - add up to 5 files at a time on the free plan (unlimited with Pro), convert them all with one click and download them as a ZIP.
What is the difference between AMR and OPUS?
AMR (Adaptive Multi-Rate) is a compressed (lossy) format, a speech codec used for phone call recordings and older mobile voice memos. OPUS (Opus Interactive Audio Codec) is a compressed (lossy) format: the most efficient modern lossy codec. Opus delivers excellent quality at very low bitrates for both speech and music.
Does it work on Mac, Windows, iPhone and Android?
Yes. The AMR to OPUS converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.